FR3134129A1 - Formwork assembly - Google Patents

Abstract

The present disclosure relates to a formwork assembly, the assembly comprising: a formwork plate (2) comprising a beam (20) extending along a first axis (X-X); a counter-beam (21) extending along a second axis (Y-Y); anda removable coupling device (5) configured to fix the counter-beam (21) to the beam (20) of the formwork plate (2) so that the second axis (Y-Y) is orthogonal to the first axis (X-X) , the coupling device (5) comprising: a first coupling portion (51); and a second coupling portion (52). Figure for abstract: Fig. 2

Description

Formwork assembly FIELD OF THE INVENTION

This request concerns the field of building and public works. More precisely, this application concerns the formwork of a slab, for example a balcony.

STATE OF THE ART

To create formwork for certain slabs of a building, such as a balcony, it may be necessary to arrange formwork elements overhanging a wall of the building, which is likely to cause problems of security. In addition, certain formwork elements are designed to rest on a support, typically a lower balcony, which has dimensions which vary depending on the building considered, which requires adapting the type of formwork element used accordingly. .

One aim of the invention is to make it possible to form a building slab in a simple and safe manner, whatever the building considered.

For this purpose, according to one aspect of the present disclosure, a formwork assembly is proposed, the assembly comprising:
a formwork plate comprising a beam extending along a first axis;
a counter-beam extending along a second axis; And
a removable coupling device configured to fix the counter-beam to the beam of the formwork plate so that the second axis is orthogonal to the first axis, the coupling device comprising:
a first coupling portion configured to couple the coupling device to the beam of the formwork plate, the first coupling portion having a shape allowing positioning of the coupling device on the beam by a translation along the first axis and a translation along a direction orthogonal to the first axis; And
a second coupling portion configured to couple the coupling device to the counter-beam, the second coupling portion having a shape allowing positioning of the coupling device on the counter-beam by a translation along the second axis and a translation along a direction orthogonal to the second axis.

Advantageously, but optionally, the assembly according to the present disclosure may comprise at least one of the following characteristics, taken alone or in combination:
- the first coupling portion comprises a wall delimiting at least part of an open cavity intended to receive a portion of the beam;
- the second coupling portion comprises a wall delimiting at least part of an open cavity intended to receive a portion of the counter-beam;
- the first coupling portion comprises a first fixing system for fixing the coupling device to the beam;
- the second coupling portion of the coupling device comprises a second fixing system for fixing the coupling device to the counter-beam;
- the first coupling portion comprises a first guiding system for guiding a translation of the coupling device on the beam along the first axis;
- the guiding system comprises at least a first wheel designed to cooperate with a first guiding surface of the beam to guide the translation of the coupling device on the beam along the first axis;
- the coupling device comprises a member for clamping the counter-beam against the formwork plate in a position for fixing the counter-beam to the formwork plate;
- it further comprises a removable head configured to attach a prop to the counter-beam;
- the head comprises a third coupling portion configured to couple the head to the counter-beam, the third coupling portion of the head having a shape allowing positioning of the head on the counter-beam by a translation along the second axis and a translation in a direction orthogonal to the second axis;
- the third coupling portion of the head comprises a second guiding system for guiding a translation of the head on the counter-beam along the second axis;
- the second guiding system comprises at least one second wheel designed to cooperate with a second guide surface of the counter-beam to guide the translation of the head on the counter-beam along the second axis;
- it further comprises a fixing member configured to fix the head to the counter-beam;
- the fixing member has a shape allowing positioning of the fixing member on the counter-beam by a translation along the second axis and a translation in a direction orthogonal to the second axis; And
- the fixing member includes:
a fourth coupling portion configured to couple the fixing member to the counter-beam; And
a fifth coupling portion configured to couple the fastener to the head.

According to another aspect of the present disclosure, there is proposed a method of mounting an assembly as previously described, comprising fixing the counter-beam to the formwork plate by means of the coupling device, so that the second axis is orthogonal to the first axis.

Advantageously, but optionally, fixing the counter-beam to the formwork plate includes:
the positioning of the coupling device on the counter-beam;
fixing the coupling device to the counter-beam;
the positioning of the coupling device on the beam; And
fixing the coupling device to the beam.

Advantageously, but optionally, the method further comprises fixing the head to the counter-beam by means of the fixing member.

Advantageously, but optionally, fixing the head to the counter-beam includes:
the positioning of the fixing member on the counter beam;
fixing the fixing member to the counter-beam;
the positioning of the head on the counter-beam; And
fixing the fixing member to the head.

DESCRIPTION OF FIGURES

Other characteristics, purposes and advantages will emerge from the description which follows, which is purely illustrative and not limiting, and which must be read with reference to the appended drawings in which:

There schematically illustrates a formwork system.

There schematically illustrates part of the formwork system illustrated on the .

There schematically illustrates another part of the formwork system illustrated on the .

There schematically illustrates a coupling device for a formwork system.

There schematically illustrates the coupling device of the from another perspective.

There is a sectional view of part of the in a coupling configuration before fixation.

There schematically illustrates a removable head for a formwork system.

There schematically illustrates the positioning of a removable head within a formwork system.

There is a sectional view of a in a coupling configuration after and before fixing the fastener.

There is a flowchart illustrating a method of assembling at least part of a formwork system.

In all the figures, similar elements bear identical references.

DETAILED DESCRIPTION OF THE INVENTION Formwork system

There illustrates a system 1 for the formwork of a slab. This formwork system 1 comprises at least one formwork plate 2 , at least one prop 3 and at least one formwork skin 4 . Once mounted, typically in the manner illustrated on the , the formwork system 1 is designed to pour all or part of a slab (not shown), typically concrete, in order to form a floor, a ceiling, a balcony or any type of support surface of a building. To form a large support surface, the formwork system 1 can comprise a plurality of formwork plates, props 3 and formwork skins 4 arranged next to each other, typically in order to form a balcony over the entire length. periphery of a building. The formwork system is intended to remain in place, in a mounting position like that shown on the , as long as the slab dries, then to be dismantled, then removed, once the slab has solidified, to be transported and then reassembled elsewhere in the building in order to pour a new slab.

In the mounting position shown on the , the formwork plate 2 rests on the props 3 in order to extend substantially parallel to the ground, that is to say horizontally, to allow the slab itself to extend horizontally, once solidified. In this regard, the props 3 cooperate with a lower surface of the formwork plate 2 which extends facing the ground. The number and positioning of the props 3 depends on the size and shape of the formwork plate 2 and must allow stable and balanced positioning of the formwork plate 2 . On the , the props 3 are in the form of a rod extending substantially orthogonal to the ground, that is to say vertically, in the mounting position. Such vertical props 3 are intended to rest on a flat surface, such as the ground or a support surface of the building located at a level lower than that at which the formwork system 1 is arranged, typically on a balcony lower than that which the system formwork 1 aims to form. The surface on which the props 3 are intended to rest may have a different shape and dimensions depending on the location of the formwork system 1 on the site. Therefore, it is preferable to be able to adapt the position of the props 3 under the formwork plate 2 , that is to say at the level of its lower surface.

Other types of support elements can be provided to support the formwork plate 2 , in particular when the formwork plate 2 extends overhanging a wall of the building. Where applicable, in the mounting position, the support elements, which can also take the form of a rod, do not extend vertically, like the props 3 illustrated on the , but rather in an inclined manner relative to the vertical, in order to rest on the wall of the building, which itself extends substantially vertically. The difficulty that can arise from positioning the support elements under the formwork plate can however be similar to that of the props 3 .

In any case, the support elements of the formwork plate 2 , whether or not they are props 3 , can include any material suitable for supporting the formwork system 1 and the slab, such as metal, for example steel. Likewise, the support elements, whether or not they are props 3 , can be of variable length in order to adjust the positioning of the formwork plate 2 relative to the ground.

The formwork skin 4 is intended to receive and support the cast slab and is for example in the form of a plate, typically made of plywood or wood, intended to be attached and rest on an upper surface of the formwork plate 2 which is opposite the lower surface of the formwork plate 2 , in the mounting position such as that illustrated on the . The formwork skin 4 has a shape and a dimension adapted to cover the majority of the upper surface of the formwork plate 2 , or even the entire upper surface of the formwork plate 2 . The formwork skin 4 advantageously has a vertical thickness which is much less than the dimensions of the formwork skin 4 horizontally, so as not to be too heavy and tedious to handle. The formwork skin 4 can also be adapted to support the weight of the personnel circulating at the level of the formwork system 1 , before the slab is poured.

Coupling device

There illustrates the formwork plate 2 more precisely by offering a view from below. As visible on the , the formwork plate 2 constitutes a flat and rigid support which is intended to support the formwork skin 4 , the slab once cast, or even the personnel circulating at the level of the formwork plate 2 . On the , the formwork plate 2 is still partly covered by the formwork skin 4 . There However, it can be distinguished that the formwork plate 2 comprises at least one beam 20 , preferably a plurality of beams 20 , for example parallel to each other, the beams 20 being elongated support members and having sufficient bending resistance to support the formwork skin 4 , the slab and, where applicable, personnel circulating at the level of the formwork system 1 . Each beam 20 extends along a first axis X-X , that is to say that the first axis X-X is the axis of elongation of the beam 20 . In addition, each of the beams 20 may comprise a sufficiently resistant material, such as metal, for example steel, and/or wood.

There also illustrates the presence of at least one counter-beam 21 extending along a second axis Y-Y , forming an axis of elongation of the counter-beam 21 , the counter-beam 21 preferably having a structure and properties similar to those of at least one of the beams 20 of the formwork plate 2 , for example, as visible on the , beams 20 forming the longitudinal edges, that is to say along the first axis X-X , of the formwork plate 2 . For example, as visible on the , but also on the , a section of at least one counter-beam 21 taken orthogonally to the second axis Y-Y takes a substantially "H" (or double "C") shape, the "H" being formed of two central bars, each extended by two bars horizontal at their end. The “H” shape can be implemented by assembling two longitudinal portions 210 of counter-beam 21 each having a “C”-shaped section, joined by the base of their “C”, for example by means of a plurality of stiffeners 211 distributed along the second axis Y-Y , as visible on the .

The counter-beam 21 is intended to participate in the cooperation of the props 3 with the formwork plate 2 . More precisely, the counter-beam 21 participates in facilitating the modularity of the positioning of the props 3 under the formwork plate 2 , and therefore the adaptation of the formwork system 1 to any support surface, by being capable of being positioned anywhere at the level of the lower surface of the formwork plate 2 , typically by translation of the counter-beam 21 along the first axis X-X .

There further shows the counter-beam 21 fixed to the formwork plate 2 , and more exactly at the level of the lower surface of the formwork plate 2 , the second axis Y-Y being orthogonal to the first axis X-X . More precisely, at least one removable coupling device 5 , illustrated with more detail on the and on the , is configured to fix at least part of the counter-beam 21 to a beam 20 of the formwork plate 2 so that the second axis Y-Y is orthogonal to the first axis X-X . There illustrates an example in which two coupling devices 5 each fix a part of the counter-beam 21 to one of the beams 20 forming the longitudinal edges of the formwork plate 2 , the illustrating the counter-beam 21 alone on which the two coupling devices 5 have been attached and fixed. This is however not limiting since a single coupling device 5 can be sufficient to fix the counter-beam 21 to the formwork plate 2 and, also, it is possible to provide more than two coupling devices 5 to fix the counter-beam 2. beam 21 to the formwork plate 2 , each coupling device 5 being configured to fix at least part of the counter-beam 21 to one of the beams 20 of the formwork plate 2 . Furthermore, it is also possible to provide for several counter-beams 21 , for example two counter-beams 21 , to be fixed to the formwork plate 2 , preferably being parallel to each other and, each extending orthogonally to each of the beams 20 of the formwork plate 2 . Where applicable, each of the counter-beams 21 is fixed to at least one of the beams 20 of the formwork plate 2 via at least one coupling device 5 .

There and the offer a more detailed perspective of the coupling device 5 visible on the and on the . As shown in the and the , the coupling device 5 comprises a first coupling portion 51 configured to couple the coupling device 5 to the beam 20 of the formwork plate 2 and a second coupling portion 52 configured to couple the coupling device 5 to the counter-beam 21 . The coupling portions 51 , 52 of the coupling device 5 each have a shape making it possible to improve the removable nature of the coupling device 5 . More precisely, the first coupling portion 51 having a shape allowing positioning of the coupling device 5 on the beam 20 by a translation along the first axis X-X and a translation along a direction orthogonal to the first axis coupling 52 having a shape allowing positioning of the coupling device 5 on the counter-beam 21 by a translation along the second axis Y-Y and a translation in a direction orthogonal to the second axis Y-Y . In this way, the coupling device 5 can easily be positioned along the counter-beam 21 and the corresponding beam 20 of the formwork plate 2 . In fact, a user can either position the coupling device 5 at an axial end of the beam 20 (respectively the counter-beam 21 , as for example visible on the ) then slide it along the beam 20 (respectively the counter-beam 21 ) until reaching the desired position, or place the coupling device 5 directly opposite the desired position along the first axis X-X (respectively of the second axis Y-Y ) then bring and fix the coupling device 5 to the beam 20 (respectively the counter-beam 21 ) by simple translation in a direction orthogonal to the first axis X-X (respectively to the second axis Y-Y ). The term "axial" here refers to a position along the first axis X-X (respectively the second axis Y-Y ) or to a direction parallel to the first axis X-X (respectively the second axis Y-Y ). As visible on the and on the , the axial ends of the counter-beam 21 are preferably free, typically to receive the coupling device 5 .

In more detail, the illustrates that the first coupling portion 51 can comprise a wall delimiting at least part of an open cavity intended to receive a portion of the beam 20 , in particular in a position for fixing the coupling device 5 to the beam 20 such as that illustrated on the . This offers a simple, easy and inexpensive way to manufacture, to allow positioning of the coupling device 5 on the beam 20 by a translation along the first axis X-X and a translation in a direction orthogonal to the first axis X-X . This wall is not necessarily continuous since the shows that the first coupling portion 51 can comprise two elongated flanges 511 having an “L” shaped section, the flanges 511 being arranged so that the “L”s face each other, the flanges 511 being further connected by two connecting elements, such as rods 512 , the ends of the rods 512 being typically attached and fixed, for example by welding or gluing, at the level of the lower surface of the foot of each of the "L" of the flanges 511 .

In the same way, the illustrates that the second coupling portion 52 may comprise a wall delimiting at least part of an open cavity intended to receive a portion of the counter-beam 21 , in particular in a position for fixing the coupling device 5 to the counter-beam 21 such as that illustrated on the . Likewise, this offers a simple, easy and inexpensive way to manufacture, to allow positioning of the coupling device 5 on the counter-beam 21 by a translation along the second axis Y-Y and a translation along a direction orthogonal to the second axis Y-Y . Here again, the wall can take any possible shape and not necessarily continuous since, in the example of coupling device 5 illustrated on the , it is in fact the lower surfaces of the “L”-shaped flanges 511 and the rods 512 which form the wall of the second coupling portion 52 .

Also, the and the show that the first coupling portion 51 can comprise a first fixing system for fixing the coupling device 5 to the beam 20 . Preferably, as visible on the , the first fixing system comprises a pin 510 , which is designed to pass through a plurality of successive orifices 5100 , some of which are provided in the beam 20 and others in the coupling device 5 , when the coupling device 5 is coupled to the beam 20 , with a view to fixing the coupling device 5 to the beam 20 . This first fixing system is very easy to use, which helps to facilitate the adaptation of the formwork system 1 to any support surface. There illustrates in this regard a configuration in which the coupling device 5 is free to be positioned along the beam 20 , the pin 510 being ready to be coupled both to the coupling device 5 and to the beam 20 to fix the coupling device 5 to the beam 20 . The successive orifices 5100 can be provided at the level of the back of the “L”s of the flanges 511 of the first coupling portion 51 , as in particular visible on the , but also within a clamping member 6 described in more detail below.

There and the further illustrate that the second coupling portion 52 of the coupling device 5 comprises a second fixing system for fixing the coupling device 5 to the counter-beam 21 . In the same way, and with the same advantages as those mentioned for the first fixing system, the second fixing system can comprise a pin 520 , which is designed to pass through a plurality of successive orifices 5200 , some of which are provided in the counter-beam 21 and others in the coupling device 5 , when the coupling device 5 is coupled to the counter-beam 21 , with a view to fixing the coupling device 5 to the beam 20 . The successive orifices 5200 can be provided in twin flanges 521 visible on the , which are attached and fixed to a support flange 522 fixed on one of the elongated “L”-shaped flanges 511 . The second fixing system may further comprise fixing elements, such as screws 523 visible on the and on the , which are intended to cooperate with orifices of the coupling device 5 , for example provided in a foot of one of the "L"-shaped flanges 511 , and of the counter-beam 21 , to further secure the fixing of the coupling device 5 on the counter-beam 21 in the fixing position such as, for example, illustrated on the .

There and the further illustrate that the first coupling portion 51 can comprise a first guiding system for guiding a translation of the coupling device 5 on the beam 20 along the first axis X-X . This makes it possible in particular to facilitate the positioning of the coupling device 5 along the beam 20 , typically prior to fixing the coupling device 5 to the beam 20 . Preferably, as visible on the and on the , the guiding system can comprise at least one first wheel 513 , even if it is also the case that a plurality of first wheels is provided, the first wheel 513 being configured to cooperate with a first guide surface 5130 of the beam 20 , typically an external surface of one foot of the "H" when the beam 20 has such a structure, as visible on the , to guide the translation of the coupling device 5 on the beam 20 along the first axis X-X . The first wheel 513 can be mounted movably around an attached axle and fixed on one of the two “L”-shaped flanges 511 of the first coupling portion 51 , as illustrated in the .

As visible on the and on the , the coupling device 5 can further comprise a clamping member 6 of the counter-beam 21 against the formwork plate 2 in a position for fixing the counter-beam 21 to the formwork plate 2 . This clamping member 6 can, for example, cooperate with the first fixing system and the second fixing system, and comprise, as visible on the and on the , an elongated body 60 surmounted by a head 61 in which at least one orifice 5100 is provided intended to cooperate with the pin 510 of the first fixing system, the body 60 extending between the twin flanges 521 of the second fixing system, a nut 62 being screwed around the body 60 to, in the fixing position, force both the twin flanges 521 against the counter-beam 21 and the coupling device 5 against the beam 20 . The clamping member 6 participates, in a simple and effective manner, in securing the counter-beam 21 once it has been fixed to the formwork plate 2 .

Removable head

Back to the , for the participation of the counter-beam 21 in the cooperation of the props 3 with the formwork plate 2 , at least one removable head 7 is provided, the head 7 being configured to fix a prop to the counter-beam 21 . Here again, the number of heads 7 per counter-beam 21 can advantageously vary depending on the number of props 3 which it is useful to fix under the counter-beam 21 , the illustrating that two props 3 can typically be fixed to the formwork plate 2 via the counter-beam 21 , two heads 7 then being used. Furthermore , the head 7 is configured to be attached and fixed on a prop 3 , for example in the manner illustrated in .

There illustrates head 7 in more detail.

The head 7 advantageously comprises a third coupling portion 71 , which is configured to couple the head 7 to the counter-beam 21 . This third coupling portion 71 of the head 7 preferably has a shape allowing positioning of the head 7 on the counter-beam 21 by a translation along the second axis Y-Y and a translation in a direction orthogonal to the second axis Y-Y . In this way, and as will be illustrated with reference to the , the head 7 can easily be positioned along the counter-beam 21 . In fact, a user can either position the head 7 at an axial end of the counter-beam 21 then slide it along the counter-beam 21 until reaching the desired position, or place the head 7 directly facing the desired position along the second axis Y-Y then bring and fix the head 7 to the counter-beam 21 by simple translation in a direction orthogonal to the second axis Y-Y . In fact, the shape of the third coupling portion 71 reinforces the removable nature of the head 7 . In more detail, the third coupling portion 71 may comprise a wall 710 delimiting at least part of an open cavity intended to receive a portion of the counter-beam 21 in a position for fixing the head 7 to the counter-beam. beam 21 . Typically, as visible on the , this wall 710 may have a “U”-shaped section, the hollow of which is intended to be coupled with at least a portion of the counter-beam 21 .

There also illustrates that the third coupling portion 71 of the head 7 can comprise a second guiding system to guide a translation of the head 7 on the counter-beam 21 along the second axis Y-Y , which in particular makes it possible to facilitate the positioning of the head 7 on the counter-beam 21 , typically in the manner illustrated on the . Preferably, the second guiding system comprises at least one second wheel 712 , for example two second wheels as visible on the , the second wheel 712 being designed to cooperate with a second guide surface 7120 , typically the external surface of a foot of the “H” of the counter-beam 21 , as visible on the , of the counter-beam 21 to guide the translation of the head 7 on the counter-beam 21 along the second axis Y-Y . The second wheels can each be attached and fixed freely in rotation around an axis fixedly mounted on the third coupling portion 71 , typically on a branch of the "U" as visible on the , which makes it possible to position the second wheels 712 optimally opposite the second corresponding guide surfaces 7120 of the counter-beam 21 .

There further shows that a fixing member 8 can be provided to fix the head 7 to the counter-beam 21 , typically in the manner illustrated in . Preferably, the fixing member 8 has a shape allowing positioning of the fixing member 8 on the counter-beam 21 by a translation along the second axis Y-Y , visible on the , and a translation following a direction orthogonal to the second axis Y-Y , visible on the . In this way, and as will be illustrated with reference to the , the fixing member 8 can easily be positioned along the counter-beam 21 . In fact, a user can either position the fixing member 8 at an axial end of the counter-beam 21 then slide it along the counter-beam 21 until reaching the desired position, or place the the fixing member 8 directly opposite the desired position along the second axis Y-Y then bring and fix the fixing member 8 to the counter-beam 21 by simple translation in a direction orthogonal to the second axis Y-Y . In order to facilitate the fixing of the fixing member 8 , as in particular visible on the , it is preferable to provide that the fixing member 8 comprises a fourth coupling portion 80 configured to couple the fixing member 8 to the counter-beam 21 as well as a fifth coupling portion 81 configured to couple the fixing member 8 to the head 7 . Typically, the fixing member 8 takes a “T” shape, the vertical element of which corresponds to the fourth coupling portion 80 and the horizontal element corresponds to the fifth coupling portion 81 . As visible on the and on the , the fixing can be carried out by means of fixing means, such as screws 82 , passing through successive orifices 820 , some of which are provided in the fixing member 8 , others in the head 7 and others in the counter-beam 21 , the orientation of these orifices 820 being adapted to allow simple and rapid fixing.

Assembly process

There illustrates a method E for mounting the formwork system 1 .

As visible on the , this method E comprises the fixing E0 of the counter-beam 21 to the formwork plate 2 by means of the coupling device 5 , so that the second axis Y-Y is orthogonal to the first axis X-X . This E0 fixing makes it possible to provide support to the props 3 and can be implemented in a simple and effective manner, in particular thanks to the coupling device 5 .

There also shows that this fixing of the counter-beam 21 to the formwork plate 2 can be more precisely implemented by the positioning E11 and the fixing E12 of the coupling device 5 on the counter-beam 21 , typically so as to result in a together as shown on the . Thanks to the second coupling portion 52 , this positioning E11 and this fixing E12 are facilitated. This reduces the difficulty of handling the formwork plate 2 . In addition, the fixing E0 of the counter-beam 21 to the formwork plate 2 can be implemented by positioning E21 and the fixing E22 of the coupling device 5 to the beam 20 . Thanks to the first coupling portion 51 , this positioning E21 and this fixing E22 are facilitated. Process E has the particular advantage of making it possible to implement the positioning steps E11 , E21 and fixing steps E12 , E22 in any order, depending on the needs and constraints of the site. For example, the positioning E11 and the fixing E12 of the coupling device 5 on the counter-beam 21 can first be implemented, typically when the counter-beam 21 is placed on the ground, so as to obtain the assembly illustrated on the . Then the counter beam 20 be attached to the formwork plate 2 and the positioning E21 and the fixing E22 of the coupling device 5 to the beam 20 implemented by positioning the counter beam 21 , equipped with the coupling device 5 , the along the lower surface of the formwork plate 2 . Alternatively, the positioning E21 and the fixing E22 of the coupling device 5 on the beam 20 can first be implemented, for example the formwork plate 2 being placed upside down on the ground, then the formwork plate 2 lifted and the counter-beam 21 fixed to the formwork plate 2 by positioning E11 and fixing E12 of the coupling device 5 on the counter-beam 21 .

There and the further show that the method E can also include the fixing E3 of the head 7 to the counter-beam 21 by means of the fixing member 8 , with a view to attaching and fixing the props 3 at the level of the lower surface of the formwork plate 2 . This fixing E3 can be more precisely implemented by the positioning E41 and the fixing E42 of the fixing member 8 to the counter-beam 21 , which are facilitated by the fourth coupling portion 80 , and by the positioning E51 and the fixing E52 of the head 7 on the counter-beam 21 , which are facilitated by the third coupling portion 71 . Finally , the fixing of the fixing member 8 to the head 7 can be implemented to secure the fixing of the head 7 to the counter-beam 21 . Here again, method E has the particular advantage of making it possible to implement the positioning steps E41 , E51 and fixing steps E42 , E52 in any order, depending on the needs and constraints of the site. Typically, as visible on the , to move a prop from one position to another along the counter-beam 21 , it can first be implemented the positioning E41 and the fixing E42 of the fixing member 8 to the counter-beam 21 , then the positioning E51 and the fixing E52 of the head 7 to the counter-beam 21 , or the reverse.

The formwork system 1 and its assembly method E therefore offer great adaptability to support the formwork plate 2 . Indeed , it is possible to bring and fix the desired number of props 3 to the formwork plate 2 , whatever their position under the formwork plate 2 , depending on the dimensions of the support surface on which the props 3 rest . In fact, the counter-beam 21 can be positioned anywhere at the lower surface of the formwork plate 2 by simple positioning along the first axis XX of the beam 20 on which the counter-beam 21 is fixed. Likewise, the coupling device 5 and the head 7 can be attached and fixed anywhere on the counter-beam 21 , by simple positioning along the second axis Y-Y . The first axis _ _ _ _ can advantageously serve as a positioning reference for the props 3 . It is enough to choose the right number of counter-beams 21 , coupling devices 5 and heads 7 to fix the desired number of props 3 , in the desired position, at the level of the lower surface of the formwork plate 2 .

Claims (19)

Formwork assembly, the assembly comprising:
a formwork plate (2) comprising a beam (20) extending along a first axis (XX);
a counter-beam (21) extending along a second axis (YY); And
a removable coupling device (5) configured to fix the counter-beam (21) to the beam (20) of the formwork plate (2) so that the second axis (YY) is orthogonal to the first axis (XX) , the coupling device (5) comprising:
a first coupling portion (51) configured to couple the coupling device (5) to the beam (20) of the formwork plate (2), the first coupling portion (51) having a shape allowing positioning of the coupling device (5) on the beam (20) by a translation along the first axis (XX) and a translation in a direction orthogonal to the first axis (XX); And
a second coupling portion (52) configured to couple the coupling device (5) to the counter-beam (21), the second coupling portion (52) having a shape allowing positioning of the coupling device (5) on the counter-beam (21) by a translation along the second axis (YY) and a translation in a direction orthogonal to the second axis (YY). Assembly according to claim 1, in which the first coupling portion (51) comprises a wall (51, 52) delimiting at least part of an open cavity intended to receive a portion of the beam (20). Assembly according to one of claims 1 and 2, in which the second coupling portion (52) comprises a wall (51, 52) delimiting at least part of an open cavity intended to receive a portion of the counter-beam ( 21). Assembly according to one of claims 1 to 3, in which the first coupling portion (51) comprises a first fixing system (510, 5100) for fixing the coupling device (5) to the beam (20). Assembly according to one of claims 1 to 4, in which the second coupling portion (52) of the coupling device (5) comprises a second fixing system (520, 5200) for fixing the coupling device (5) to the counter-beam (21). Assembly according to one of claims 1 to 5, in which the first coupling portion (51) comprises a first guiding system for guiding a translation of the coupling device (5) on the beam (20) along the first axis (X-X ). Assembly according to claim 6, in which the guiding system comprises at least one first wheel (513) intended to cooperate with a first guide surface (513) of the beam (20) to guide the translation of the coupling device (5) on the beam (20) along the first axis (X-X). Assembly according to one of claims 1 to 7, in which the coupling device (5) comprises a clamping member (6) of the counter-beam (21) against the formwork plate (2) in a fixing position of the counter-beam (21) to the formwork plate (2). Assembly according to one of claims 1 to 8, further comprising a removable head (7) configured to fix a prop (3) to the counter-beam (21). Assembly according to claim 9, in which the head (7) comprises a third coupling portion (71) configured to couple the head (7) to the counter-beam (21), the third coupling portion (71) of the head (7) having a shape allowing positioning of the head (7) on the counter-beam (21) by a translation along the second axis (Y-Y) and a translation in a direction orthogonal to the second axis (Y-Y). Assembly according to claim 10, in which the third coupling portion (71) of the head (7) comprises a second guiding system for guiding a translation of the head (7) on the counter-beam (21) along the second axis (Y-Y). Assembly according to claim 11, in which the second guiding system comprises at least one second wheel (712) intended to cooperate with a second guide surface (7120) of the counter-beam (21) to guide the translation of the head ( 7) on the counter-beam (21) along the second axis (Y-Y). Assembly according to one of claims 9 to 12, further comprising a fixing member (8) configured to fix the head (7) to the counter-beam (21). Assembly according to claim 13, in which the fixing member (8) has a shape allowing positioning of the fixing member (8) on the counter-beam (21) by a translation along the second axis (Y-Y) and a translation in a direction orthogonal to the second axis (Y-Y). Assembly according to one of claims 13 and 14, in which the fixing member (8) comprises:
a fourth coupling portion (80) configured to couple the fixing member (8) to the counter-beam (21); And
a fifth coupling portion (81) configured to couple the fixing member (8) to the head (7). Method of assembly (E) of an assembly according to one of claims 1 to 15, comprising fixing (E0) of the counter-beam (21) to the formwork plate (2) by means of the coupling device (5) , so that the second axis (Y-Y) is orthogonal to the first axis (X-X). Assembly method (E) according to claim 16, in which the fixing (E0) of the counter-beam (21) to the formwork plate (2) comprises:
the positioning (E11) of the coupling device (5) on the counter-beam (21);
fixing (E12) of the coupling device (5) to the counter-beam (21);
the positioning (E21) of the coupling device (5) on the beam (20); And
the fixing (E22) of the coupling device (5) to the beam (20). Method of mounting (E) an assembly according to one of claims 13 to 15, comprising fixing (E3) of the head (7) to the counter-beam (21) by means of the fixing member (8 ). Mounting method (E) according to claim 18, in which the fixing of the head (7) to the counter-beam (21) comprises:
the positioning (E41) of the fixing member (8) on the counter beam (20);
fixing (E42) the fixing member (8) to the counter-beam (21);
the positioning (E51) of the head (7) on the counter-beam (21); And
the fixing (E52) of the fixing member (8) to the head (7).